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Peripheral collisions with radioactive heavy-ion beams at relativistic energies are discussed as an innovative approach for probing the transient regime experienced by fissile systems evolving towards quasi-equilibrium. A dedicated…

Nuclear Experiment · Physics 2014-11-20 C. Schmitt , K. -H. Schmidt , A. Kelić , A. Heinz , B. Jurado , P. N. Nadtochy

The isotopic and isotonic distributions of the projectile fragmentation products have been simulated by a modified statistical abrasion-ablation (SAA) model and the isoscaling behavior of projectile-like fragments has been discussed. The…

We analyze the production cross sections and isotopic distributions of projectile-like residues in the reactions $^{112}$Sn + $^{112}$Sn and $^{124}$Sn + $^{124}$Sn at an incident beam energy of 1 GeV/nucleon measured with the FRS fragment…

Nuclear Theory · Physics 2015-03-06 H. Imal , A. Ergun , N. Buyukcizmeci , R. Ogul , A. S. Botvina , W. Trautmann

The fragment production cross sections for 140 MeV/nucleon $^{48,40}$Ca$+^{9}$Be reactions have been calculated by the Heavy Ion Phase Space Exploration (HIPSE) model. Isoscaling behavior is observed. The isoscaling parameters $\alpha$ and…

Nuclear Theory · Physics 2010-01-25 Y. Fu , D. Q. Fang , Y. G. Ma , X. Z. Cai , W. D. Tian , H. W. Wang , W. Guo

Correlations between pairs of projectile-like fragments, emitted by the system ${^{16}O}+{^{197}Au}$ at the laboratory bombarding energy of 515 MeV, have been studied under two stipulated conditions: (1) at least one member of the pair is…

Nuclear Experiment · Physics 2008-11-26 Jayanti Rama Rao , H. Machner , G. Buhr , M. Nolte , M. Palarczyk

Spectroscopic properties of nuclei are accessible with projectile fragmentation reactions, but approximations made in the reaction theory can limit the accuracy of the determinations. We examine here two models that have rather different…

Nuclear Theory · Physics 2019-05-03 A. Bonaccorso , G. F. Bertsch

In this paper we discuss the reaction mechanisms that occur in the overlap zone for semi-peripheral heavy ion collisions at intermediate energies. In particular we focus on the development of neck instabilities, that could determine a…

Nuclear Theory · Physics 2008-11-26 G. Fabbri , M. Colonna , M. Di Toro

We have studied the fragment yields emitted from the fragmentation of excited projectile nuclei in peripheral collisions of 136Xe+Pb at 1 GeV/nucleon, and measured with the high-resolution magnetic spectrometer, the Fragment Separator (FRS)…

Nuclear Theory · Physics 2021-07-14 H. Imal , R. Ogul

Fast dynamic processes between electrons in solids and a foreign atom represent a fundamental challenge for describing interactions in many-body systems and are a prerequisite for modelling materials modification. We experimentally…

Strongly Correlated Electrons · Physics 2026-05-07 Radek Holeňák , Kevin Vomschee , Eleni Ntemou , Svenja Lohmann , Daniel Primetzhofer

The cross sections of fragments produced in 140 $A$ MeV $^{40,48}$Ca + $^9$Be and $^{58,64}$Ni + $^9$Be reactions are calculated by the statistical abration-ablation(SAA) model and compared to the experimental results measured at the…

Nuclear Theory · Physics 2009-03-19 C. W. Ma , H. L. Wei , J. Y. Wang , G. J. Liu , Y. Fu , D. Q. Fang , W. D. Tian , X. Z. Cai , H. W. Wang , Y. G. Ma

A projectile (84^Kr_36) having kinetic energy around 1 A GeV was used to expose NIKFI BR-2 emulsion target. A total of 700 inelastic events are used in the present studies on projectile fragments. The emission angle of the projectile…

Nuclear Experiment · Physics 2013-07-17 M. K. Singh , A. K. Soma , Ramji Pathak , V. Singh

We develop a model in the framework of nuclear fragmentation at thermodynamic equilibrium which can be mapped onto an Ising model with constant magnetization. We work out the thermodynamic properties of the model as well as the properties…

Nuclear Theory · Physics 2009-10-31 J. M. Carmona , J. Richert , A. Tarancon

Experimental and theoretical investigation of the fragmentation reaction in Fermi-energy domain is currently of particular importance for not only the nuclear physics but also some interdisciplinary fields. In the present work, neutron-rich…

We investigate fragmentation of charged particles in e+e- annihilation at 22, 35 and 44 GeV in terms of their polar angle and momentum distributions. From the angular distribution the ratio of longitudinal to total hadronic cross-section…

High Energy Physics - Experiment · Physics 2009-11-07 Mona Blumenstengel , Stefan Kluth

We calculate target fragmentation in $p p \to n X$ and $\gamma p \to n X $ reactions in the meson cloud picture of the nucleon. The $p p \to n X$ reaction is used to fix the $pn\pi^+$ form factor for two different models. We take into…

High Energy Physics - Phenomenology · Physics 2007-05-23 U. D'Alesio

The average and local structures of the (PbTe)1-x(PbS)x system of thermoelectric materials has been studied using the Rietveld and atomic pair distribution function (PDF) methods. Samples with 0:25 < x are macroscopically phase separated.…

Materials Science · Physics 2007-05-23 H. Lin , E. S. Bozin , S. J. L. Billinge , J. Androulakis , C. H. Lin , M. G. Kanatzidis

We study theoretically the fragmentation of the helium dimer, $^4$He$_2$, into singly charged ions in collisions with relativistic highly-charged projectiles. We discuss the main mechanisms driving this process with the focus on the…

Atomic Physics · Physics 2022-06-22 B. Najjari , S. F. Zhang , X. Ma , A. B. Voitkiv

We analyze the energy scale dependence of fragmentation functions from $e^+$-$e^-$ collisions using conventional momentum measures $x_p$ and $\xi_p$ and rapidity $y$. We find that replotting fragmentation functions on a normalized rapidity…

High Energy Physics - Phenomenology · Physics 2008-11-26 Thomas A. Trainor , David T. Kettler

In the present paper momentum distributions of nuclei produced in the heavy ion beam fragmentation at the relatively low energies (below 100 $A\cdot$MeV) are studied. For this study, a new theoretical approach is developed on the basis of…

Nuclear Theory · Physics 2024-10-23 A. N. Ismailova , Yu. L. Parfenova , P. G. Sharov , D. M. Janseitov

Precise predictions for nuclei near drip lines are crucial for experiments in new generation of rare isotope facilities. A multi-models investigation of the $Q_g$ systematics for fragments production cross sections, with $Q_g$ defined as…